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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Wrought copper and copper alloys - Detection of residual stress - Ammonia test
Standard published on 25.10.2007
Selected format:Tensile testing method for fine wire of nonferrous metals
Standard published on 29.9.2020
Selected format:Methods for chemical analysis of tin-lead solders--Determination of tin content
Standard published on 11.3.2003
Selected format:Methods for chemical analysis of tin-lead solders—Part 10Determination of cadmium content—Flame atomic absorption spectrometry and Na2EDTA titration method
Standard published on 14.10.2017
Selected format:Methods for chemical analysis of tin-lead solders—Part 11Determination of phosphorus content—Crystal violet phosphorus-vanadium-molybdeum heteropoly acid spectrophotometry
Standard published on 14.10.2017
Selected format:Methods for chemical analysis of tin-lead solders—Part 12Determination of sulfur content—High frequency combustion with infrared absorption method
Standard published on 14.10.2017
Selected format:Methods for chemical analysis of tin-lead solders—Part 13Determination of antimony,bismuth,iron,arsenic,copper,silver,zinc,aluminium,cadmium,phosphorous and gold contents—Inductively coupled plasma atomic emission spectrometric method
Standard published on 14.10.2017
Selected format:Methods for chemical analysis of tin-lead solders—Part 14Determination of tin, lead,antimony,bismuth,silver,copper,zinc,cadmium and arsenic content—Optical emission spectrometry
Standard published on 14.10.2017
Selected format:Methods for chemical analysis of tin-lead solders--Determination of antimony content
Standard published on 11.3.2003
Selected format:Methods for chemical analysis of tin-lead solders--Determination of bismuth content
Standard published on 11.3.2003
Selected format:Latest update: 2025-08-19 (Number of items: 2 212 995)
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